If a dog is too full or too hungry, it may cause vomiting and foaming. Owners should not give their dogs too much food during daily feeding. Dogs do not know what satiety means. It will keep eating food. Of course, the dog cannot be hungry all the time. Feeding must follow the principle of regular and quantitative feeding, and the portion should not exceed 80% of fullness.
The dog accidentally eats medicine or toxic items, causing vomiting of white foam. It is recommended to go to the hospital immediately to induce vomiting or gastric lavage treatment.